-43.88% is the change from 139 to 78
Calculation steps:
[( 78 - 139 ) ÷ 139] x 100 = -43.88%
Formula
Percentage change = [(78 - 139) / 139] x 100
Subtract the new number by the original number
78 - 139 = -61
-61 ÷ 139 = -0.43884892086330934
-0.43884892086330934 x 100 = -43.88%